Burglar-alarm.



vA. HAGEL, 1R. BURGLAR ALARM.

APPLICATION FILED JULY I9, |915- fig-f Patented Jan. 1, 1918.`

Aram* ornic.

ALBERT HAGEL, JR., 0F NEWARK, NEW JERSEY.

BURGLAR-ALARM.

Specification of Letters Patent.

Application filed July 19, 1915. Serial No. 40,573.

To all lwhom t may concern.'

Be it known that I, ALBERT HAGEL, J r., a citizen of the United States, residing inthe city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Burglar- Alarms, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it pertains to make, construct, and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, forming l.a part of this specification.

My invention relates to burglar alarms of the detonating type. The main object of my invention is to provide a simple, efficient and inexpensive device, in which a cap or the like is exploded on the opening of a closure, such vas a window-or door, and a ,further object is to provide adjusting means i for conveniently placing the device in and out of operative position.

Reference is to be had to the accompanying drawings forminga part of this specilication, in which similar characters of reference indicate corresponding parts in all the ligures.

Figure 1 represents a front elevation of an upper and lower window sash showing my device applied thereto.

Fig. 2 represents a plan view thereof, showing it in operative position, the cover being removed.

Fig. ,3 represents a longitudinal sectional side elevation taken on lines -a: of Fig. 2. Fig. 4 represents an end elevation; and

Fig. 5 represents a transverse sectional end elevation taken on lines y-y of Fig. 2, looking in the direction indicated by thc arrow.

In the drawings, 1 represents preferably, a cast metal casingwhich may be of any convenient form or configuration, one of the corners of said casing being provided with an adjusting face 2 to be engaged by the end of an adjusting screw 3 carried by -a suitable lug 4 formed on the base 5. The base 5 may also be of any convenient-form, and is provided with apertures to receive screws 6 by means of which the base is secured to the lower window sash 7.' The said base is further provided with the headed stud 8 and lug 9, designed to` engage with an aperturelO and an elongated projections 14 designed to have holding engagement with suitable apertures formed in the Walls of the casing, and into which they are sprung. The interior ofthe front wall of the casing 1 is provided with a cap cham ber 15, for the purposel of holding a cap to be exploded by the spring-actuated hammer 16. The cap chamber 15 as illustrated, may be formed integrally with the casing or secured thereto in any convenient or desired manner. A stud 17 provided with a slotted head 18, is secured to the bottom of they casing 1 and mounted thereon in any convenient manner is a hammer 16, which is free to swing in the arc of a circle. The stud 17 is surrounded by a spiral spring 19, the upper end of` which bears against the side of the hammer and the lowerv end of which bears against the lug 9 formed on the base 5.

The hammer 16 carries at its front end a head or firing pin 20, adapted to impinge on the cap aforesaid, an operating handle 21 by means of which the hammer is returned to its operative position, and an engaging element 22 designed to have -holding engagement with a projection 23 extending from one side of the spring-actuated lever 24, pivotally secured to one side wall of the casing 1 by means of a pivot 25. The front end of the casing 1 is slotted to permit the segmental end 26 of the lever 24 to project therethrough, and to engage with the upper window sash 27. 28 represents a spiral spring, one end of which is secured to the rear end of the pivoted lever V24 and the other end of which is secured to the casing 1V in any convenient or desired manner, in order to at all times maintainv the lever 24 in itsoperative position, as clearly indicated in F igs.l 2, 4 and 5 of the drawings. n v

The operation of the device is as follows: The device being in the position shown in the various figures of the drawings, a cap is inserted in the cap chamber 15, when either the upper or lower window sash isopened, Athe pivoted spring-actuated Patented aan. 1, i918. i

lever 24 moves around the pivot 25, causing the engaging element 22 of the hammer 16 to become disengaged from the projection 23 extending from one side of the springactuated lever 2%, thereby permitting the spring 19 to swing the hammer 16 in the arc of a circle, kcausing the firing pin 2O of the hammer to impinge and explode the cap located in the cap chamber 15. After the cap has been exploded, the hammer 16 is returned to its operative position by taking hold of the handle 21 and swinging thev hammer in the arc of a circle until the engaging element 22 is brought into holding engagement with the projection 23 of the spring-actuated lever 24. in daytime, if it is not desired to use the device as an alarm, the adjusting screw 8 is turned backward, thereby causing the casing 1 to be moved away from the upper window sash, the lower end of the spring 19 which bears against the lug 9 of the base 5 serving to hold the device in an inoperative position. It will thus be seen that movement of either the upper or lower sash will cause rotation of the lever 24, the releasing of the hammer 16 and detonation of the cap as aforesaid. v Experience has'demonstrated that the organization above described is a highly etlicient one, and while the device shown is the preferred embodiment of my invention, I do not wish to be limited to the exact details ofv construction and combination herein shown and described, as obvious modifications thereof, not involving the exercise of invention, may be made by any skilled mechanic, and such departures from what is herein shown and described, 1 consider within the scope and terms of my claims.

Having thus described my invention, what I desire to secure by Letters Patent is:

1. A burglar alarm comprising a stationary base, provided with a headed stud and a pair of integral lugs on its upper surface, a chambered casing, provided with an integral cap chamber and a curved slot, pivotally mounted on said base and being adjustably positioned by said headed stud, lugs and curved slot, a spring-actuated hammer pivotally secured within said casing, provided with an engaging projection at its free end, a pivoted lever, segmental end, located within said casing and projecting therefrom, the opposite end thereof operatively connected with the engaging projection on said hammer, whereby movement of said segmental end will release said spring-actuated hammer.

2. A burglar alarm comprising a stationarybase provided with integral adjusting means, said means comprising aheaded stud and a pair of lugs, an adjustable casing provided with an integral capl chamber, and further provided with a curved slot in its under side, pivotally mounted en said base,

ns aid engaging means of a pivoted lever provided'- provided with a one of said studs adapted to enter said ing when the same is moved in the arc of a circle, a spring-actuated hammer provided with holding means at its free end, pivotally secured within said casing, the free end of hammer .designed to be engaged by the with a segmental outer end, said pivoted lever being located within said casing and the segmental end thereof projecting therefrom, whereupon, movement of said segmental end will release said spring-actuated hammer.

3. A burglar alarm comprising a stationary base, provided with adjusting means comprising a headed stud, an integral lug adapted to be engaged by a curved slot formed in the chambered basing and another screw-threaded lug projecting upwardly from said base, screw passinor through said lug, a chambered casing provided with an adjusting face and further provided with an integral cap chamber, pivotally mounted on said baseby means of said headed stud and adjustably positioned thereon by meansof said adjusting screw engaging with said adjusting face and adapted to swing in the arc of a circle by means of the stud moving in the curved slot, a spring-actuated hammer pivotally secured within said casing, provided with an engaging projection at its free end, a pivoted lever, provided with a segmental end, located within said casing and projecting therefrom, the opposite end thereof operatively connected with the engaging projection on said hammer, whereby movement of said segmental end will release said springactuated hammer.

4. A burglar alarm comprising a base provided with a screw-threaded lug, a headed stud and a further lug located opposite said headed stud, a casing, provided withaan integral cap chamber, and a curved slot pivotally and adjustably mounted on said base, an adjusting face on said casing in juxtaposition to the screw-threaded lug on said base, a screw-threaded stud mounted in said screw-threaded lug, adapted to engage Vwith the adjusting face on said casing and forming adjusting means for said casing, a cover provided with snapping means for removably securing it to said casing, a Yspringactuated hammer provided with an engaging projection at its free end pivotally secured within said casing, a spring-actuated pivoted lever located within the casing and provided with receiving means vfor operatively connecting the 'free end of said hammer with said lever, said pivoted lever being further provided with a segmental end projecting outside of said casing, whereby movement of said segmental end will cause said receiving means to become disengaged and an adj usting' lll@ from the projection at the free end of said hammer and cause the same to explode a cap located in said cap chamber.

5. A burglar alarm comprising a stationary base, provided on its upper surface with a headed stud,` an integral lug located approximately opposite said headed stud, and a further integral screw-threaded lug located on that end of the base formed by the converging sides thereof, a chambered casing, provided with an integral cap chamber, and further provided With an aperture and a curved slot formed in the base thereof, pivotally mounted on said base and being positioned by said headed stud, the Casing being adapted to swing in the arc of a circle by means of said lug and curved slot, said chambered casing being further provided With an adjusting face, an adjusting screu7 passing through said screw-threaded lug of the base and engaging said adjusting face, a spring-actuated hammer pivotally secured Within said casing, provided With an engaging projection at its free end, the free bottom end of the spring being held in position by means of the first-mentioned lug formed on the base, a pivoted lever, provided With a segmental end, located in said casing and projecting therefrom, the opposite end thereof being operatively connected with the engaging projection on said hammer, whereby movement of said segmental end Will release said spring-actuated hammer.

This specification signed and witnessed this 9th day of July, 1915.

ALBERT HAGEL, JR. Witnesses:

FREDK C. FISCHER, CLIFFORD A. ALLrsToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

